Improvement in shutter-fasteners



H. & F..H. HUMPHREY..

Shutter-Fasteners.

Patented May 19, 1874..

UNITED STATES PATENT OEEICEa HENRY HUMPHREY AND FREDERICK H. HUMPHREY, OF BLOOMFIELD,

' CONNECTICUT.

IMPROVEMENT IN SHUTTER-FASTENRS.

Specification forming part of Letters Patent No. 150,955, dated May 19, 1874 application filed March 20, 1874.

To all whom 'it may conce-ra:

Be it known that we, HENRY HUMPHREY and FREDERICK H. HUMPHREY, of B1oomiield, county of Hartford and State of Connecticut, have jointly invented certain new and useful Improvements in the Manufacture of Blind-Fastenings; and to enable others skilled in the art to make and use the same, we will proceed to describe, referring to the letters on Y the drawings, which indicate like parts in each of the figures. Y,

Our invention consists in a skeleton socket or case, formed in one piece of metal, having a partial screw-threaded surface, by which it is secured, and a side .opening is provided for the quick and easy insertion of a spring. In the accompanying drawings, Figure l is an edge view of this invention. Fig. 2 is a side View of the case. Fig. 3 is a side view of the hook-bar and the actuating-spring.

a is a skeleton socket or case formed in one piece of metal, having a partial screw-threaded surface, by which it is secured in the blind, and having an elongated projection, b, by which it is turned into an orifice made in the blind. This case is made skeleton form, having the usual end opening to receive the fastening' hook-bar c, and a side opening, a', for the quick and easy insertion ofthe spring d to its place without injury to its movement, as is liable to take place when cramped through a narrow opening.

It is manufactured at a lowr figure, and takes but little material; it is easily adjusted, it 

